As I stated in my transmission to the probes, I fear that the pinging may be some sort of homing signal, that Isaac and/or Lucy are carrying homing beacons that are guiding "dah tah dah dah, Super-Probe" toward our friends. This may be the surprise that Parker and Harden were talking about. I always felt that their probes had to ALREADY be on their way to Mars by the time that they threatened us with a surprise. If they hurriedly put "Super-Probe" together and sent him Marsbound, he might be here by now.
Taz